Sewing-machine motor



F. J. OSIUS.

SEWlNG MACHINE MOTOR. APPLlCATl-ON FILED FEB.'26,1911.

Patented Jan. 6,19%.

3 SHEETS-SHEET I.

ATTURNE Y5 F. J. USIUS.

SEWING MACHINE MOTOR. APPLICATION FILED FEB. 26', 1917 1 ,327,210. Patented Jan. 6, 1920.

3 SHEETS-SHEET].

/NVENTUF? mfl MM ATTORNEYS" F. J. OSIUS.

SEWING MACHINE MOTOR.

APPLICATION HLED FEB. 26, 1911.,-

Patented Jan.6,1920.

3 SHEETSSHEET 3- //\/\/E/\/TUR ATTORNEYS provide a of simple construction,

' rm'rrnn snares racnanr orrion.

FREDERICK J. OSIUS', OF RACINE, WISCON$IN.

SEWING-MACHINE MOTOR.

' Specification of Letters Patent.

Patented Jan. n, 192%.-

Application filed February 26, 1.917. Serial No. 151,100.

adapted for actuating sewing or other light machines.

It is one of the objects of the present invention to provide a sewing machine motor which may be easily mounted upon the arm of any ordinary sewing or other light machine and which when not in use may be swung to an out-of-the-way position beneath the arm and closer to the base of the machine to occupy the minimum amount of space when not in. use.

A further object of the invention is to be easily mounted upon the arm of any or dinary drop head sewing machine and which when not in use may be swung to a position closer to the base portion of the arm to permit the folding of the arm into the table top of the machine withoutv removing themotor from the machine arm.

A further object of the invention is to provide a sewing machine motor which may be swung from one position to another with a minimum effort and which motor will be antomatically retained in either position.

A further object of the invention is to provide a sewing machine motor which may be easily attached and detached from the arm of the sewing machine and in which the driving wheel of the motor is yieldingly held in engagement with the driven wheel of the machine.

A further object of the invention is to provide a sewing machine motor which may be easily attached to the arm of the machine and adjustedto fit hand wheels of different diameters without in any manner marring, drilling or cutting the machine arm.

A further object of the invention is to provide a sewing machine motor which is is strong and durable and is well adapted for the purpose desired,

sewing machine motor which may standard'13 by a clamping With the above and other objects in view the invention consists of the improved sewmgmachine motor and its parts and combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawings in which the same reference characters indicate the same parts in all of the views:

Figure 1 is a top view of a po drop head sewing machine with one of the improved sewing machine motors mounted thereon and shown in operative position;

Fig. 2-is' a vertical sectional view there-.

of taken on the line 2-2 of Fig. 1;

Fig. 3 is a vertical sectional View thereof taken on line 33 of Fig. 1; and

Fig. 4 is a horizontal sectional view thereof taken'on line l1 of Fig. 2, with the motor shown in inoperative position.

Referring to the drawings the numeral 8 indicates in part the table top, 9 the hinged dro or base portion thereof, 10 the hinged loc ring board and 11 the head or arm of the machine which is mounted on the hinged drop portion and swings downwardly into the table top and is covered by the extension portion 12 in the ordinary manner common to drop head sewing machines. The sewing machine arm 11 comprises the upright column or standard 13., the horizontally extendin portion is proecting from the uprig t and through which the horizontal driving shaft 15. 8X- tends and has its bearings. A hand orv driven wheel 16 mounted on the rear end of-the shaft 15 is adapted to be yieldingly engaged and driven by a slightly grooved pulley 17 mounted on the armature shaft 18 of the improved sewing machine motor 19. The wheel engaging portion of thepulley 17 of the motor is preferably formed of cork or other like material to provide the necessary frictional engagement between the pulley and the hand wheel.

The motor 19 is pivotally mounted on one end portion of an inverted U-shaped rod or member 20 which is adjustably connected at its opposite end portion w the machine clamping device consists of a slit clamping block 22 provided with a fabric covered metal band 523 looped at one end portion through an eye 24 formed in the block and having its opposite end pivotally connected rtion of a I device 21-. The

to a threaded rod 25 which extends through a slotted portion 26 of the clamping block and is engaged by a thumb nut 27. A cupped Washer 28 surrounding the threaded rod and interposed between the nut and a rounded portion 29 of the clamping block forms a partial ball and socket joint and compensates for the different angular positions of the thumb nut with relation to the clamping block.

The metal band is passed around the up right column of the sewing machine arm and clamped firmly thereto by turning the thumb nut.

The inner end portion 20 of the inverted U-shaped rod or member 20 extends vertically adjustably through openings 30 in the split portions of the clamping block and is held in adjusted position by screws 31 which clampingly draw the split-portions of the block to ether and around the U- shaped rod. T e opposite or outer end portion of the U-shaped rod is inclined outwardly and toward the other end of the rod to form an obliquely extending bearing 32 upon which the motor is pivotally mounted. An offset bearing arm 33 projecting rigidly from the motor cas ng 34 is journaled on the obliquely extending bearing and the parts are so arranged that when the motor is in an operative or running position the armature shaft of the motor will be in an approximately horizontal position and partor yieldingly in either allel to the sewing machine shaft, and when swung to an inoperative position beneath the machine arm and toward the base portion and the sewing end thereof, the motor shaft will extend obliquely with relation to the machine shaft and in a position to permit the folding of the machine arm or head through the machine table top. When the motor is mounted on a fixed head and is in inoperative position it will occupy but a minimum amount of space.

A collar 35 mountedon the bearing end 32 of the U-shaped rod beneath the offset arm 33 maintains said arm on the bearing end and the collar is in turn locked to the arm by an angular finger 36 which extends transversely through the sleeve and is threaded into the rod portion 32 and extends toward the other end of the rod. The outer end of this finger is curved downwardly andhas connected thereto one end of a coiled spring 37, the other end of the spring being connected to one of. the screws 38 of the motor casing. The spring is so connected to the finger and the motor casing as to swing under tension across the axial line of the motor pivotal connection with the U- shaped arm and thus serves to hold the moone of its two positions of rest.

The inverted U-shaped rod 20 provides for adjusting thenmotor vertically and also laterally away from the upright column in order to properly engage hand wheels of different diameters.

In adjusting the rod 20 laterally the screws 31 are loosened and the outer end portion of the rod is swung to the desired position and screws are then tightened to clamp the rod.

In order to wind bobbins on some types of sewing machines in which the bobbin winder (not shown) is engaged by the sewing machine belt, the metal portion of the pulley 17 is formed with a belt groove 17 and a coiled spring or other belt (not shown) is connected to the belt groove and the bobbin winder. In winding bobbins on machines of this type it is not-desirable to actuate the sewing machine and to accomplish this result an adjustable spacing arm 39 is pivotally mounted at one end on the motor casing and its recessed end 10 may be swung i" into engagement with the sewing machine hand wheel to space the driving pulley of the motor from the hand wheel and thus prevent the transmission of motion from the pulley to the wheel. The motor is controlled by a foot actuated rheostat (not shown).

From the foregoing description it will be seen that the sewing machine motor is of very simple construction and may be easily attached to any ordinary sewing machine and when not in use the motor may be swung to a position to permit the folding of the drop head of the machine without removing the motor.

What I claim as my invention is:

1. The combination with a sewing ma-" chine having-a base portion and a head per! tion and a wheel'to be driven, of a moto supporting means clamped to the machine, a 105,

motor member pivotally mounted on themotor supporting means in a position to have its driving pulley drivingly engage the machine wheel and movable to an inoperative position toward the sewing end of the machine, and means for maintaining the motor in either one of its positions.

2. The combination with a sewing machine having a table top with an opening and a drop head portion and a wheel to be driven, of a motor supporting means clam ed to the drop head portion, a motor mem er mounted on the motor supporting means in a position to have its driving pulley drivingly engage the machine wheel and movable to an inoperative position away from the machine wheel and to a position to permit the folding of the drop hea portion and the motor through the opening of the table without removing the motor from the drop head portion.

3. A sewing machine motor, comprising a motor supporting member having means for positively clamping it to a sewing machine drop head, a motor member pivotally mount- 130 ment to the head portion,

ed on the supporting member and movable to an actuating posltion and to an inoperative position to be folded with the drop head, and means for yieldingly maintaining the motor in its actuating position.

,4. The combination with a sewingmachine having a head portion and a wheel to f chine having -a head portion and a wheel to a be driven of a clamping device'for attachment to t e head portion, a clamping band forming part of the device, an arm pivotally connected to the clamping device and having two positions of rest, a motor member connected 'to the arm, and means for yield.- ingly maintaining the arm in one of its positions of rest.

6. The combination with a sewing machine having a head portion and a wheel to be driven, of a clamping device for attachwheel and movable Tn testimony whereof, I aflix my signaa clamping band forming part of said device, an adjustable member connected to the clamping device,

a motor member pivotally connected to the adjustable member and having its driving the driven wheel and movv pulley engaging able to an inoperative position toward the sewing end of the machine, and means for wheel engaging position.

7. The combination with a sewing machinehaving a head portion and a wheel to be driven, of a clamping device, a clamping band forming part of said device and ex tending around a portion-0f the machine head, a U- haped member connected at one end portion to the clamping deviceya bearing member fulcrumed on the other end of the U-shaped member, a motor member connected to the bearing member and positioned to have its driving wheel engage the machine to an inoperative position toward the sewing end of the machine, and a spring means the motor in either one of its positions.

ture.

I FREDERIGK'J. os'IUs; 1

for .yieldingly maintain- 35 'yieldingly maintaining the motor in its 

